SVT and Ectopic heart beats. 2 Drs said B blockers, 2 said no. Short of breath, throat closing. Forced exhalation Anxiety? Yes B Blocker? Or no?

SVT plus. Sorry but from out here with what you've presented we can't adjudicate for you. There are several possibilities and they likely trigger the various opinions you got. We would need to actually see and examine you to decide the question.